# gnm v1.1-0

Monthly downloads

## Generalized Nonlinear Models

Functions to specify and fit generalized nonlinear models, including models with multiplicative interaction terms such as the UNIDIFF model from sociology and the AMMI model from crop science, and many others. Over-parameterized representations of models are used throughout; functions are provided for inference on estimable parameter combinations, as well as standard methods for diagnostics etc.

## Readme

# gnm

Functions to specify and fit generalized nonlinear models, including models with multiplicative interaction terms such as the UNIDIFF model from sociology and the AMMI model from crop science, and many others. Over-parameterized representations of models are used throughout; functions are provided for inference on estimable parameter combinations, as well as standard methods for diagnostics etc.

## Installation

You can install **gnm** from github with:

```
# install.packages("devtools")
devtools::install_github("hturner/gnm")
```

## Code of conduct

Please note that this project is released with a Contributor Code of Conduct. By participating in this project you agree to abide by its terms.

## Functions in gnm

Name | Description | |

gnm-defunct | Defunct Functions in gnm Package | |

getContrasts | Estimated Contrasts and Standard Errors for Parameters in a gnm Model | |

pickCoef | Get Indices or Values of Selected Model Coefficients | |

summary.gnm | Summarize Generalized Nonlinear Model Fits | |

residSVD | Multiplicative Approximation of Model Residuals | |

se.gnm | Standard Errors of Linear Parameter Combinations in gnm Models | |

plot.gnm | Plot Diagnostics for a gnm Object | |

gnm-package | Generalized Nonlinear Models | |

voting | Data on Social Mobility and the Labour Vote | |

Diag | Equality of Two or More Factors | |

predict.gnm | Predict Method for Generalized Nonlinear Models | |

exitInfo | Print Exit Information for gnm Fit | |

barleyHeights | Heights of Barley Plants | |

expandCategorical | Expand Data Frame by Re-expressing Categorical Data as Counts | |

wedderburn | Wedderburn Quasi-likelihood Family | |

wheat | Wheat Yields from Mexican Field Trials | |

anova.gnm | Analysis of Deviance for Generalized Nonlinear Models | |

se | Extract Standard Errors | |

Topo | Topological Interaction of Factors | |

profile.gnm | Profile Deviance for Parameters in a Generalized Nonlinear Model | |

yaish | Class Mobility by Level of Education in Israel | |

instances | Specify Multiple Instances of a Nonlinear Term in a gnm Model Formula | |

model.matrix.gnm | Local Design Matrix for a Generalized Nonlinear Model | |

nonlin.function | Functions to Specify Nonlinear Terms in gnm Models | |

termPredictors | Extract Term Contributions to Predictor | |

gnm | Fitting Generalized Nonlinear Models | |

parameters | Extract Constrained and Estimated Parameters from a gnm Object | |

ofInterest | Coefficients of Interest in a Generalized Nonlinear Model | |

vcov.gnm | Variance-covariance Matrix for Parameters in a Generalized Nonlinear Model | |

MultHomog | Specify a Multiplicative Interaction with Homogeneous Effects in a gnm Model Formula | |

Exp | Specify the Exponential of a Predictor in a gnm Model Formula | |

House2001 | Data on twenty roll calls in the US House of Representatives, 2001 | |

Const | Specify a Constant in a "nonlin" Function Predictor | |

MPinv | Moore-Penrose Pseudoinverse of a Real-valued Matrix | |

Multiplicative interaction | Specify a Product of Predictors in a gnm Model Formula | |

Inv | Specify the Reciprocal of a Predictor in a gnm Model Formula | |

Dref | Specify a Diagonal Reference Term in a gnm Model Formula | |

confint.gnm | Compute Confidence Intervals of Parameters in a Generalized Nonlinear Model | |

checkEstimable | Check Whether One or More Parameter Combinations in a gnm Model are Identified | |

Symm | Symmetric Interaction of Factors | |

cautres | Data on Class, Religion and Vote in France | |

barley | Jenkyn's Data on Leaf-blotch on Barley | |

asGnm | Coerce Linear Model to gnm Object | |

backPain | Data on Back Pain Prognosis, from Anderson (1984) | |

friend | Occupation of Respondents and Their Closest Friend | |

meanResiduals | Average Residuals within Factor Levels | |

mentalHealth | Data on Mental Health and Socioeconomic Status | |

erikson | Intergenerational Class Mobility in England/Wales, France and Sweden | |

No Results! |

## Vignettes of gnm

## Last month downloads

## Details

URL | https://github.com/hturner/gnm |

BugReports | https://github.com/hturner/gnm/issues |

License | GPL-2 | GPL-3 |

LazyData | yes |

Language | en-GB |

NeedsCompilation | yes |

Packaged | 2018-06-20 16:33:36 UTC; hturner |

Repository | CRAN |

Date/Publication | 2018-06-21 20:12:56 UTC |

imports | graphics , grDevices , MASS , Matrix , methods , nnet , qvcalc (>= 0.8-3) , relimp , stats , utils |

depends | R (>= 3.0.0) |

suggests | vcdExtra |

Contributors | Bill Venables, David Firth, Brian Ripley, Douglas Bates, Martin Maechler |

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